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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from heat.common import exception as heat_exc
from heat.openstack.common.rpc import common as rpc_common
from heat.tests.common import HeatTestCase
from oslo.config import cfg
import heat.api.middleware.fault as fault
class StackNotFoundChild(heat_exc.StackNotFound):
pass
class FaultMiddlewareTest(HeatTestCase):
def test_openstack_exception_with_kwargs(self):
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(heat_exc.StackNotFound(stack_name='a'))
expected = {'code': 404,
'error': {'message': 'The Stack (a) could not be found.',
'traceback': None,
'type': 'StackNotFound'},
'explanation': 'The resource could not be found.',
'title': 'Not Found'}
self.assertEqual(expected, msg)
def test_openstack_exception_without_kwargs(self):
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(heat_exc.StackResourceLimitExceeded())
expected = {'code': 500,
'error': {'message': 'Maximum resources '
'per stack exceeded.',
'traceback': None,
'type': 'StackResourceLimitExceeded'},
'explanation': 'The server has either erred or is '
'incapable of performing the requested '
'operation.',
'title': 'Internal Server Error'}
self.assertEqual(expected, msg)
def test_exception_with_non_ascii_chars(self):
# We set debug to true to test the code path for serializing traces too
cfg.CONF.set_override('debug', True)
msg = u'Error with non-ascii chars \x80'
class TestException(heat_exc.HeatException):
msg_fmt = msg
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(TestException())
expected = {'code': 500,
'error': {'message': u'Error with non-ascii chars \x80',
'traceback': 'None\n',
'type': 'TestException'},
'explanation': ('The server has either erred or is '
'incapable of performing the requested '
'operation.'),
'title': 'Internal Server Error'}
self.assertEqual(expected, msg)
def test_remote_exception(self):
# We want tracebacks
cfg.CONF.set_override('debug', True)
error = heat_exc.StackNotFound(stack_name='a')
exc_info = (type(error), error, None)
serialized = rpc_common.serialize_remote_exception(exc_info)
remote_error = rpc_common.deserialize_remote_exception(cfg.CONF,
serialized)
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(remote_error)
expected_message, expected_traceback = str(remote_error).split('\n', 1)
expected = {'code': 404,
'error': {'message': expected_message,
'traceback': expected_traceback,
'type': 'StackNotFound'},
'explanation': 'The resource could not be found.',
'title': 'Not Found'}
self.assertEqual(expected, msg)
def test_should_not_ignore_parent_classes(self):
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(StackNotFoundChild(stack_name='a'))
expected = {'code': 404,
'error': {'message': 'The Stack (a) could not be found.',
'traceback': None,
'type': 'StackNotFoundChild'},
'explanation': 'The resource could not be found.',
'title': 'Not Found'}
self.assertEqual(expected, msg)
def test_internal_server_error_when_exeption_and_parents_not_mapped(self):
wrapper = fault.FaultWrapper(None)
class NotMappedException(Exception):
pass
msg = wrapper._error(NotMappedException('A message'))
expected = {'code': 500,
'error': {'message': u'A message',
'traceback': None,
'type': 'NotMappedException'},
'explanation': ('The server has either erred or is '
'incapable of performing the requested '
'operation.'),
'title': 'Internal Server Error'}
self.assertEqual(expected, msg)
def test_should_not_ignore_parent_classes_even_for_remote_ones(self):
# We want tracebacks
cfg.CONF.set_override('debug', True)
cfg.CONF.set_override('allowed_rpc_exception_modules',
['heat.tests.test_fault_middleware'])
error = StackNotFoundChild(stack_name='a')
exc_info = (type(error), error, None)
serialized = rpc_common.serialize_remote_exception(exc_info)
remote_error = rpc_common.deserialize_remote_exception(cfg.CONF,
serialized)
wrapper = fault.FaultWrapper(None)
msg = wrapper._error(remote_error)
expected_message, expected_traceback = str(remote_error).split('\n', 1)
expected = {'code': 404,
'error': {'message': expected_message,
'traceback': expected_traceback,
'type': 'StackNotFoundChild'},
'explanation': 'The resource could not be found.',
'title': 'Not Found'}
self.assertEqual(expected, msg)
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